DE10228689A1 - Component production method for fitting a sensor and a component in a casing uses a recess in the casing for inserting the sensor just after testing the casing and the component - Google Patents

Component production method for fitting a sensor and a component in a casing uses a recess in the casing for inserting the sensor just after testing the casing and the component Download PDF

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Publication number
DE10228689A1
DE10228689A1 DE2002128689 DE10228689A DE10228689A1 DE 10228689 A1 DE10228689 A1 DE 10228689A1 DE 2002128689 DE2002128689 DE 2002128689 DE 10228689 A DE10228689 A DE 10228689A DE 10228689 A1 DE10228689 A1 DE 10228689A1
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Prior art keywords
sensor
housing
component
casing
assembly
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Granted
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DE2002128689
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German (de)
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DE10228689B4 (en
Inventor
Jürgen Dipl.-Ing.(FH) Bäumler
Jürgen Henniger
Stephan Nohe
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Conti Temic Microelectronic GmbH
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Conti Temic Microelectronic GmbH
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Priority to DE10228689.2A priority Critical patent/DE10228689B4/en
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Publication of DE10228689B4 publication Critical patent/DE10228689B4/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/128—Encapsulating, encasing or sealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

A set (1) of components has an electromagnetic adjusting device (3) and a plastic-injection-molded casing (2) for holding it. A Hall sensor (6) determines the position of one part of the adjusting device. A component is potted in the casing, where a recess is formed, into which the sensor inserts after testing the casing.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Baugruppe mit mindestens einer elektromechanischen Stellvorrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for producing an assembly with at least one electromechanical Actuator according to the preamble of claim 1.

Bei der Herstellung einer aus Einzelteilen zusammengesetzten Baugruppe summieren sich die Ausfallwahrscheinlichkeiten der Einzelteile zu einer Gesamtausfallwahrscheinlichkeit der Baugruppe. Besteht die Baugruppe aus miteinander vergossenen Einzelteilen führt der Ausfall eines Einzelteils der Baugruppe zur Funktionslosigkeit der gesamten Baugruppe, die dann in der Regel entsorgt werden muß.When making one from individual parts assembled assembly, the failure probabilities add up of the individual parts to an overall failure probability of the assembly. Consists the assembly of molded parts leads together Failure of an individual part of the assembly to make the entire assembly, which then usually has to be disposed of.

Baugruppe aus einem Gehäuse, einer elektromagnetischen Stellvorrichtung und einem Sensors zur Bestimmung der Position eines Teils der elektromagnetischen Stellvorrichtung werden beispielsweise zum Betätigen eines Ventils zur Abgasrückführung verwendet. Derartige Baugruppen sind beispielsweise aus der DE 101 12 033 bekannt.Assemblies comprising a housing, an electromagnetic actuating device and a sensor for determining the position of a part of the electromagnetic actuating device are used, for example, to actuate a valve for exhaust gas recirculation. Such assemblies are for example from the DE 101 12 033 known.

Der Erfindung liegt die Aufgabe zugrunde ein Verfahren zur Herstellung einer Baugruppe gemäß dem Oberbegriff des Patentanspruchs 1 anzugeben, das bei einem nach der Herstellung auftretenden Defekt nicht vollständig wertlos ist.The invention is based on the object a method for producing an assembly according to the preamble of claim 1 specify that in a after manufacture occurring defect is not complete is worthless.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale im Kennzeichen des Patentanspruchs 1 gelöst, nach dem die Baugruppe mindestens eine elektromechanischen Stellvorrichtung, ein Gehäuse zur Aufnahme der mindestens einen elektromechanischen Stellvorrichtung und einen Sensor zur Bestimmung der Position eines Teils der mindestens einen elektromagnetischen Stellvorrichtung aufweist. Erfindungsgemäß ist in dem Gehäuse eine Aussparung vorgesehen, in welche der Sensor erst nach der Herstellung und nach dem Testen des Gehäuses eingesetzt wird. Da die Sensoren häufig ein sehr kostspieliges Einzelteil darstellen werden diese bei einem Defekt der Baugruppe eingespart.This object is achieved by the Features solved in the characterizing part of claim 1, according to which the assembly has at least one electromechanical actuator, a housing for Inclusion of the at least one electromechanical actuator and a sensor for determining the position of a part of the at least one has an electromagnetic actuator. According to the invention in the housing a recess is provided in which the sensor only after manufacture and after testing the case is used. Because the sensors are often a very expensive one They will represent individual parts if the assembly is defective saved.

In einer Weiterbildung des Verfahrens ist vorgesehen, daß der Sensor, der vorzugsweise als Hallsensor ausgebildet ist, in einem Kontakte aufweisenden Tragkörper angeordnet ist, wobei der Sensor mit dem Tragkörper in die Aussparung im Gehäuse eingesetzt ist.In a further development of the procedure it is envisaged that the Sensor, which is preferably designed as a Hall sensor, in one Carrying body having contacts is arranged, wherein the sensor with the support body is inserted into the recess in the housing is.

Das Gehäuse ist vorzugsweise in einem Spritzverfahren aus Kunststoff hergestellt, wobei in das Gehäuse eine Schaltungsanordnung eingebettet ist, wobei der Sensor mit der Schaltungsanordnung elektronisch verbunden ist.The housing is preferably in a spraying process made of plastic, with a circuit arrangement in the housing is embedded, the sensor with the circuit arrangement being electronic connected is.

Zudem ist in dem Gehäuse ein Stanzgitter eingebettet, mit dem die elektromechanische Stellvorrichtung und die Schaltungsanordnung verbunden sind.There is also a in the housing Punched grid embedded with which the electromechanical actuator and the circuit arrangement are connected.

In einer letzten Weiterbildung ist vorgesehen, daß die Baugruppe als elektromechanische Stellvorrichtung zur Betätigung eines Ventils zur Abgasrückführung verwendet wird.In a recent training course provided that the Assembly as an electromechanical actuator for actuating a Exhaust gas recirculation valve used becomes.

Das beschriebene Verfahren zur Herstellung einer Baugruppe, bei dem der Sensor in einer Aussparung des Gehäuses angeordnet wird, nachdem die Funktion des Gehäuses und gegebenenfalls der Schaltungsanordnung geprüft wurde, ermöglicht die Kosten reduzierte Herstellung der Baugruppe. Zudem kann die Baugruppe bei einem am Sensor auftretenden Defekt leichter repariert werden.The described method for producing a Assembly in which the sensor is arranged in a recess in the housing after the function of the housing and possibly the circuit arrangement checked was made possible the cost of manufacturing the assembly. In addition, the Assembly easier to repair if a defect occurs on the sensor become.

Im folgenden ist das erfindungsgemäße Verfahren zur Herstellung einer Baugruppe anhand von einem Ausführungsbeispiel im Zusammenhang mit einer Figur beschrieben und erläutert.The following is the method according to the invention to manufacture an assembly using an exemplary embodiment described and explained in connection with a figure.

Es zeigt die:It shows the:

Figur eine schematische Darstellung eines Gehäuses zur Aufnahme eines elektromagnetischen Aktors sowie eines in einem Tragkörper angeordneten Sensor.Figure is a schematic representation of a housing to accommodate an electromagnetic actuator and one in one supporting body arranged sensor.

Ein Ventil zur Abgasrückführung dient zur Steuerung der Menge an Abgas, die im Teillastbetrieb dem Kraftstoff/Luftgemisch beigemengt wird, das den Brennräumen einer Brennkraftmaschine während dem Ansaugtakt zugeführt wird. Der Vorteil der Beimengung von Abgas liegt darin, daß eine Ansaugtrakt angeordnete Drosselklappe voll geöffnet werden kann, wodurch die Drosselklappe dem strömenden Kraftstoff/Luftgemisch nicht hinderlich entgegen steht. Dieses Ventil zur Abgasrückführung wird von einer Baugruppe betätigt, die im wesentlichen aus einer in einem Gehäuse angeordneten elektromechanischen Stellvorrichtung besteht.A valve for exhaust gas recirculation is used to control the amount of exhaust gas that the fuel / air mixture in part-load operation is added to the combustion chambers an internal combustion engine during fed to the intake stroke becomes. The advantage of adding exhaust gas is that an intake tract arranged throttle valve can be fully opened, whereby the throttle valve to the flowing Fuel / air mixture is not an obstacle. This valve for exhaust gas recirculation actuated by an assembly, which essentially consist of an electromechanical arranged in a housing Actuator exists.

Das Gehäuse wird in einem Spritzgußverfahren hergestellt, während dem in das Gehäuse eine Schaltungsanordnung und ein Stanzgitter eingebettet werden kann.The housing is injection molded manufactured while in the housing a circuit arrangement and a lead frame are embedded can.

Das Stanzgitter bildet die elektrische Verbindung zwischen der Schaltungsanordnung und der elektromagnetischen Stellvorrichtung. Zudem bildet das Stanzgitter Gehäuseanschlüsse, über welche die Baugruppe mit einer Stromversorgung sowie mit weiteren Steuergeräten der Brennkraftmaschine, beispielsweise über einen Datenbus, verbunden ist.The lead frame forms the electrical one Connection between the circuit arrangement and the electromagnetic Locking device. In addition, the lead frame forms housing connections via which the assembly with a power supply and with other control devices of the Internal combustion engine, for example connected via a data bus is.

Die elektromagnetische Stellvorrichtung wird von einem Stellmotor gebildet, der für Drehungen mit einem Drehwinkel von maximal 360° optimiert ist, und an dessen Anker eine Drehscheibe befestigt ist. Die Drehscheibe weist als Marke einen Permanentmagneten auf, dessen Magnetfeld von einem als Hallsensor ausgebildeten Sensor sensiert wird, wodurch die Position der Drehscheibe und damit die Position des Ventils zur Abgasrückführung bestimmt wird.The electromagnetic actuator is formed by an actuator, which is used for rotations with an angle of rotation optimized by a maximum of 360 ° is, and a turntable is attached to the anchor. The hub has as a brand a permanent magnet, the magnetic field of a sensor designed as a Hall sensor is sensed, whereby the position of the turntable and thus the position of the valve is determined for exhaust gas recirculation.

Der Hallsensor ist speziell für die Bedürfnisse der Baugruppe zur Betätigung des Ventils zur Abgasrückführung entwickelt und dadurch in der Herstellung sehr kostspielig.The Hall sensor is especially for the needs the assembly for actuation of the exhaust gas recirculation valve and therefore very expensive to manufacture.

Zur Kostenvermeidung im Fall fehlerhaft hergestellter Gehäuse und/oder Schaltungsanordnungen ist der Hallsensor in einem Kontakte aufweisenden Tragkörper angeordnet, wobei die Kontakte des Tragkörpers mit entsprechenden Anschlußflächen des Hallsensors verbunden sind. Auf der Schaltungsanordnung sind für die Kontakte des Tragkörpers komplementäre Kontakte ausgebildet, wodurch der Tragkörper nach dem Testen des Gehäuses und nach dem Testen der Schaltungsanordnung mit der Schaltungsanordnung verbunden wird.In order to avoid costs in the case of incorrectly manufactured housings and / or circuit arrangements, the Hall sensor is arranged in a support body having contacts, the contacts of the support body being connected to corresponding connection surfaces of the Hall sensor. On the circuit Arrangement are formed for the contacts of the support body complementary contacts, whereby the support body is connected to the circuit arrangement after testing the housing and after testing the circuit arrangement.

Die Figur zeigt eine Baugruppe 1 aus einem Schrittmotor 3 mit einer einen Permanentmagnet 8 tragenden Drehscheibe 4, einem Gehäuse 2 und den in einem Tragkörper 7 angeordneten Hallsensor 6. In dem Gehäuse 2 sind ein nicht dargestelltes Stanzgüter und eine Schaltungsanordnung eingebettet. Zudem ist in dem Gehäuse 2 eine Aussparung ausgebildet, durch die der Tragkörper 7 auf die Schaltungsanordnung aufgesetzt wird, wodurch der Hallsensor 6 mit der Schaltungsanordnung elektrisch verbunden ist.The figure shows an assembly 1 from a stepper motor 3 with a permanent magnet 8th carrying turntable 4 , a housing 2 and that in a supporting body 7 arranged Hall sensor 6 , In the case 2 are a punched goods, not shown, and a circuit arrangement embedded. It is also in the housing 2 formed a recess through which the support body 7 is placed on the circuit arrangement, whereby the Hall sensor 6 is electrically connected to the circuit arrangement.

Dieses Aufsetzen des in der Herstellung teuren Hallsensors 6 erfolgt nur, wenn das Gehäuse 2 und die Schaltungsanordnung bei einer Funktionsprüfung als Fehlerfrei getestet werden. Wird bei der Funktionsprüfung des Gehäuses 2 und/oder der Schaltungsanordnung ein Fehler festgestellt, wird der in dem Tragkörper 7 angeordnete Hallsensor 6 nicht durch die Aussparung des Gehäuses 2 auf die Schaltungsanordnung aufgesetzt, wodurch im Fall einer Entsorgung des Gehäuses 2 die Kosten für den Hallsensor 6 eingespart werden.This installation of the Hall sensor, which is expensive to manufacture 6 only occurs when the housing 2 and the circuit arrangement can be tested as error-free during a functional test. Will be during the functional test of the housing 2 and / or the circuit arrangement is found to have a fault, the fault in the support body 7 arranged Hall sensor 6 not through the recess in the housing 2 placed on the circuit arrangement, which in the event of disposal of the housing 2 the cost of the Hall sensor 6 be saved.

Durch die erfindungsgemäße Baugruppe 1 werden die Herstellungskosten des Gehäuse 2 durch die beim Auftreten von Fehlern nicht verbauten Hallsensoren 6 stark reduziert.Through the assembly according to the invention 1 the manufacturing cost of the housing 2 due to the Hall sensors not installed when errors occur 6 greatly reduced.

Claims (8)

Verfahren zur Herstellung einer Baugruppe (1) mit mindestens einer elektromechanischen Stellvorrichtung (3) und mit einem Gehäuse (2) zur Aufnahme der mindestens einen elektromechanischen Stellvorrichtung (3), und mit einem Sensor zur Bestimmung der Position eines Teils der mindestens einen elektromagnetischen Stellvorrichtung (3), wobei in dem Gehäuse (2) mindestens eine Komponente vergossen ist, dadurch gekennzeichnet, daß in dem Gehäuse (2) eine Aussparung ausgebildet wird, in welche der Sensor nach dem Testen des Gehäuses (2) und/oder der mindestens einen Komponente auf Funktionstüchtigkeit eingesetzt wird.Process for manufacturing an assembly ( 1 ) with at least one electromechanical actuator ( 3 ) and with a housing ( 2 ) for receiving the at least one electromechanical actuating device ( 3 ), and with a sensor for determining the position of a part of the at least one electromagnetic actuating device ( 3 ), in which case ( 2 ) at least one component is cast, characterized in that in the housing ( 2 ) a recess is formed, into which the sensor after testing the housing ( 2 ) and / or the at least one component is used for functionality. Verfahren zur Herstellung einer Baugruppe nach Anspruch 1, dadurch gekennzeichnet, daß der Sensor in einem Kontakte aufweisenden Tragkörper (7) angeordnet ist, und daß der Sensor mit dem Tragkörper (7) in die Aussparung des Gehäuses (2) eingesetzt wird.Method for producing an assembly according to Claim 1, characterized in that the sensor in a support body ( 7 ) is arranged, and that the sensor with the support body ( 7 ) in the recess of the housing ( 2 ) is used. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Gehäuse (2) in einem Spritzverfahren aus Kunststoff hergestellt wird.Method according to claim 1 or 2, characterized in that the housing ( 2 ) is made from plastic in an injection molding process. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als Komponente in das Gehäuse (2) ein Stanzgitter und/oder eine Schaltungsanordnung eingegossen wird, und daß der Sensor mit dem Stanzgitter und/oder der Schaltungsanordnung elektronisch verbunden wird.Method according to one of claims 1 to 3, characterized in that as a component in the housing ( 2 ) a lead frame and / or a circuit arrangement is cast in, and that the sensor is electronically connected to the lead frame and / or the circuit arrangement. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß als elektromechanische Stellvorrichtung ein Stellmotor (3) verwendet wird, und daß als Teil der elektromechanischen Stellvorrichtung vom Sensor die Position einer mit dem Anker des Stellmotors (3) verbundenen, eine Marke tragenden Drehscheibe (4) sensiert wird.Method according to one of the preceding claims, characterized in that a servo motor ( 3 ) is used, and that as part of the electromechanical actuating device from the sensor, the position of one with the armature of the servomotor ( 3 ) connected, brand-bearing hub ( 4 ) is sensed. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß als Sensor ein Hallsensor (6) verwendet wird.Method according to one of the preceding claims, characterized in that a Hall sensor ( 6 ) is used. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß als Marke auf der Drehscheibe (4) ein Permanentmagnet (8) verwendet wird.Method according to claim 5 or 6, characterized in that as a mark on the turntable ( 4 ) a permanent magnet ( 8th ) is used. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Baugruppe (1) zur Betätigung eines Ventils zur Abgasrückführung verwendet wird.Method according to one of the preceding claims, characterized in that the assembly ( 1 ) is used to actuate a valve for exhaust gas recirculation.
DE10228689.2A 2002-06-27 2002-06-27 Method for producing an assembly Expired - Fee Related DE10228689B4 (en)

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DE102016203560A1 (en) * 2016-03-04 2017-09-07 Schaeffler Technologies AG & Co. KG Sensor module for an actuator with displaceable armature and actuator arrangement

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